Speakerphone



FIG. 1 is a front view of a speakerphone showing our new design;

FIG. 2 is a back view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right view thereof; and,

FIG. 6 is a left view thereof.

The broken lines shown in the figures depict portions of the speakerphone that form no part of the claimed design. 

CLAIM The ornamental design for a speakerphone, as shown and described. 